The SP720 is an array of SCR/Diode bipolar structures for ESD and over-voltage protection to sensitive input circuits.
The SP720 has 2 protection SCR/Diode device structures per input.
A total of 14 available inputs can be used to protect up to 14 external signal or bus lines.
Over-voltage protection is from the IN (pins 1-7 and 9-15) to V+ or V-.